<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      let p = new Promise((res, rej) => {
        setTimeout(() => {
          res('66');
          // rej('err');
        }, 1000);
      });

      p.then((value) => {
        console.log(111);
        //中断链条
        return new Promise(() => {});
      })
        .then((value) => {
          console.log(222);
        })
        .then((value) => {
          console.log(333);
        })
        //异常穿透
        .catch((reason) => {
          console.warn(reason);
        });
    </script>
  </body>
</html>
